1961882456 has 8 divisors (see below), whose sum is σ = 3678529620. Its totient is φ = 980941224.

The previous prime is 1961882441. The next prime is 1961882459. The reversal of 1961882456 is 6542881691.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961882459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122617646 + ... + 122617661.

Almost surely, 2^1961882456 is an apocalyptic number.

It is an amenable number.

1961882456 is a deficient number, since it is larger than the sum of its proper divisors (1716647164).

1961882456 is a wasteful number, since it uses less digits than its factorization.

1961882456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245235313 (or 245235309 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 1961882456 is about 44293.1423134553. The cubic root of 1961882456 is about 1251.8654719067.

The spelling of 1961882456 in words is "one billion, nine hundred sixty-one million, eight hundred eighty-two thousand, four hundred fifty-six".